Ken, Here are some shots of a pin I cleaned from the top os Sea Of Dreams recently.. I believe it may be an original "Bird-beak". I remember hearing the original ones were shaped like a toucan which I believe you should be able to see in this picture.
And here's a better shot.
It is pretty stout for a beak, almost as thick as a Bugaboo. The inside edge of the eye is milled a bit so the sling won't cut and the sling attached is quite old.
As THE gear historian for all things Yosemite I'm asking you what do you think? Could this be an original or is it some funky homemade job of unknown origin?
I am hardly an expert. Here is what I think. From what I understand the first beaks were CracknUps that were sawed off. The first specifically made bird beak was fashioned by Bridwell and used on the Big Chill. It looks similar to the one you found. Cool piece.
I might have to do a little more investigation.